It may change wear resistance, but mating-hole deformation, brittleness, assembly force and surface condition also matter. Review the complete combination.

The average-stress calculation uses two planes when effective section and load sharing are equal. Bending, clearance and unequal loading prevent a universal twofold strength claim.

Tool contact, protrusion, wall thickness, prior damage and microstructure can contribute. Lower force alone may leave insufficient retention.

Mating-hole size, alignment, cylindricity, finish and temperature also affect fit. Verify function in the assembled condition.

Their shapes can overlap, but sleeves can provide spacing, protection or connection. Rotating-bushing use needs defined contact, wear and clearance conditions.

Fixture material, clearance and restraint may differ from the real assembly. Interpret the result against application conditions and perform appropriate assembled testing.

Yes. Treatment affects finished shaft and bore dimensions, so drawings should state inspection condition and permitted ranges.

Mating holes, stack thickness, sequence, load and intended motion help establish functional tolerances and inspection methods more accurately.